Which if the following is not part of the cell theory?

• All cells have a nucleus

• All cells arise from pre existing cells

• All organisms consist of one or more cells

• Cells are the fundamental units of life

All cells contain

• Nucleus, cytoplasm, organelles

• DNA, Cytoplasm, cell membrane

• Nucleus, cytoplasm, cell wall

• Cell wall, central vacuole. cytoplasm

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

A key characteristic of Eukaryotic cells are

• Plasma membrane

• Cell membrane

• Nucleoid area

• Membrane bounded organelles

How energy is available from one trophic level to the next trophic level?

• 5%

• 10%

• 20%

• 90%

Tags

NGSS.HS-LS2-4

Which of the following best describes secondary succession?

• A farmer plows a field destroying all the vegetation

• A fire destroys the vegetation

• A storm comes through destroying all the vegetation

• All of the listed choices

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-5

This organelle produces lipids

• Smooth ER

• Rough ER

• Golgi

• Centriole

Which best describes an isotope?

• Has same number of protons and electrons but different number of neutrons

• Has same number of protons and neutrons but different number of electrons

• Has same number of neutrons and electrons but different number of protons

• None of the above choices

This type of bonds form when one electron donates an electron to another atom.

• Polar Covalent

• Non polar covalent

• Ionic

• Hydrogen

Tags

NGSS.HS-PS1-1

An atom has 7 protons and 8 protons and 8 electrons, what is this elements atomic number

• 7

• 8

• 15

• 23

Tags

NGSS.HS-PS1-1

An element has 7 protons, 7 electrons and 5 neutrons. What is this elements atomic mass (mass number0

• 14

• 19

• 7

• 10

Tags

NGSS.MS-PS1-1